The keywords and descriptions I type show up on all standard pages (articles, basic pages, etc), but they do not show up on any custom content types. All I see are the default meta-tags without the keywords and description that I type. My website contains several custom content types and all have the same behavior. I tried a few different themes and they are still missing.
Someone suggested to add
render($content['metatags']); to see the meta-tags.
Can anybody suggest to which file I need to add that line? I am creating the custom content type using the admin panel in Drupal 7.